PURPOSE: To provide an easy inclination of the operator room by enabling the operator room to be inclined forwardly via tilt rods of the lifting device without requiring any special device.

CONSTITUTION: Operater room 8 is installed at the body schassie of the bucket operation vehicle such as a dozer shovel etc. in such a way as it may be inclined forwardly. At the front upper part of the operator room 8 is installed a link connec- tion part 10 so as to cause the leading ends of the tilting rod 4 having the bucket 5 removed. It is possible to faciliate an inclination of the operator room by applying thus constructed device.